Hybrids Plus - charge control

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Charge Control: Smart Charge and V2G* (Inverger™)

*Vehicle-To-Grid

Smart Charge and V2G are Charge Control technologies that let the power company control a PHEV's charging or discharging in real time

to postpone PHEV charging during time of peak demand, or
to buy back the energy from a PHEV's battery

It also enables both the owner and the power company to track the PHEV's usage and performance, while on the road and while charging.

What's the point of Charge Control?

During times of peak demand, the power company prefers to reduce the demand, rather than turning on additional (dirtier and more expensive) power plants. In places that subscribe to such services, the power company shuts off appliances such as air conditioners until the peak demand is over. Similarly, Smart Charge allows the power company to postpone charging until the peak demand is over. Smart Charge is not as far reaching as V2G (a technology that allows the power company to buy energy back from a plug-in car) but is very effective because it is less expensive than V2G.
The hardware used in Charge Control (V2G or Smart Charge) also monitors the vehicle (when driving or when plugged-in). As a side benefit, that information is available, through the web, to both the power company and the owner, for the purpose of tracking and optimizing the performance of the vehicle.
At this point there is no financial benefit from using Charge Control. However, one day the power utility may sell electricity at a lower price to charge Smart Charge vehicles, and may buy back that electricity back at a premium.

What's the difference between Smart Charge and V2G?

In both V2G and Smart Charge, the power utility can control the power flow between a plug-in car and the power grid. However, in Smart Charge power only flows from the grid to the car, while in V2G power can flow in both directions.

Charge Control system diagram

In Charge Control (Smart Charge or V2G), a fleet of PHEV is fitted with Charge Control hardware, plus, optionally V2G Invergers™

Vehicle diagram

The Charge Control hardware is connected to the the servers of V2Green through the Cell Phone network and the Internet.
The owners, the utilities and research organizations have access to data from each PHEV. In addition, the utility can disable charging, or request discharging (V2G).

System diagram

With an subscription to V2Green's rervice, you can view the status of your PHEV in real time, on the Web

Inverger™

The Inverger™ is Hybrids Plus' proprietary V2G technology.
It is an integrated Inverter and Charger to tranfer power in either direction between the electrical grid and the PHEV battery.

The Inverger™ will be offered initially on V2G^* Escape PHEVs. Such vehicles will charge rapidly at 220 Vac, and be able to return energy back to the power company in minutes on those rare occasions when the power company suddenly needs extra energy.

Thanks to its topology (a proprietary technology), the Inverger™ uses very few power components, resulting is a small size, relatively low cost and high conversion efficiency.